baber/WOPTO huggingface dataset:
Patent GB-1500972-A (GB)
Title: Electroplating process for chrome
IPC: C25D3/10
Filed: 1975-01-17
Abstract: 1500972 Electro-plating chromium VINTAGE CURACAO N V 17 Jan 1975 [23 Jan 1974 12 June 1974 29 Oct 1974] 2221/75 Heading C7B Cr is electro-plated from an aqueous chromic acid/sulphate bath which contains the reaction product of an aqueous equinolar mixture of dichloroacetic acid and nitrilotriacetic acid together with a Sr(NO 3 ) 2 /Sr(OH) 2  buffer, which is a complex containing Sr and dichloracetic acid residue. The bath may also contain SiF 6 , alkali metals e.g. K or Na, and Sr. A bath temperature of 40- 70‹C at a c.d. of 40-1000 A/dm<SP>2</SP> is specified. A steel substrate may be precleaned with a wet glass powder blast in which the water contains an inhibitor, and may subsequently be heated to expel hydrogen from the plated layer. Electrolyte agitation reduces hydrogen absorption. The Cr plate has a pearly low-friction surface with an obtainable Vickers hardness of 1200-1500.
Patent GB-928192-A (GB)
Title: Improvements in or relating to pressure-responsive electric switches
IPC: H01H35/26
Filed: 1960-01-21
Abstract: 928,192. Fluid actuation of switches. J. F. MACANDREW, E J. BELLAMY, and R. E. THOMPSON & CO. (SUNBURY) Ltd. Jan. 23, 1961 [Jan. 21, 1960], No. 2259/60. Class 38 (5). The biasing force of a control spring 9 for a pressure-operated mechanism is adjustable to either of two values by a lever arm 18 acted upon by non-circular part 22 of a shaft having a knob, Fig. 1 (not shown). The higher value is preset by adjusting a screw 20 carried by the arm 18 and acting on a support 17 of the spring, and the lower value by adjusting a screw 23 which varies the outward movement of the arm. The other end of the spring may bear on a snap-action mechanism as in Specification 928,191, actuated by a diaphragm, Fig. 2 (not shown).
Patent GB-572852-A (GB)
Title: Manufacture of trisazo- and polyazo-dyestuffs
IPC: C09B35/00
Filed: 1942-02-20
Abstract: Trisazo and polyazo dyes are obtained by diazotising and coupling operations, wherein tetrazotised 3 : 31 - dihydroxy - 4 : 41 - diamino - diphenyl is used as at least one diazo component.  The products dye wool, silk, leather, cotton, linen, jute or regenerated cellulose fibres and may be converted into complex metal compounds by treatment in substance, in the dye-bath or on the fibre with agents yielding metal, e.g. copper, chromium, nickel or cobalt.  The metal compounds produced in substance may be incorporated in nitrocellulose lacquers, artificial resins and spinning masses.  Examples (1) to (8) relate to the production of the dyestuffs: (1) (2 - aminophenol - 4 - sulphonamide --> (alkaline), 5 : 51-dihydroxy-2 : 21-dinaphthylamine -7 : 71 - disulphonic acid)2 (alkaline) \sx 3 : 31-dihydroxy-4 : 41-diaminodiphenyl, and the corresponding products in which the diazo component is replaced by the 4-chloro-, 5-nitro- or 4 : 6-dinitro-derivatives of 2-aminophenol or by 5-nitro-2-aminobenzoic acid; (2) (4-aminophenol - 2 - carboxylic acid --> cresidine)2 \sQ (alkaline) (5 : 51-dihydroxy-2 : 21-dinaphthylamine - 7 : 71 - disulphonic acid)2 (alkaline) \sx 3 : 31 - dihydroxy - 4 : 41 - di - aminodiphenyl); (3) as in (2) with replacement of the dinaphthylamine component by the corresponding dinaphthylurea; (4) 1-phenyl-3-methyl - 5 - pyrazolone \sM 3 : 31 - dihydroxy - 4 : 41 - diaminodiphenyl --> resorcinol \sM 4-nitroaniline-2-sulphonic acid: (5) (anthranilic acid --> 1 - (51 - hydroxy - 21 - naphthyl) - 3 - methyl - 5 - pyrazolone - 71 - sulphonic acid)2 (alkaline) \sx 3 : 31 - dihydroxy - 4 : 41 - di - aminodiphenyl; (6) 4-chloroaniline --> resorcinol)2 \sx 3 : 31 - dihydroxy - 4 : 41 - diamino - diphenyl; (7) (salicylic acid \sM benzidine)2 \sQ (resorcinol)2 \sx 3 : 31-dihydroxy-4 : 41-diaminodiphenyl; (8) (5-nitro-2-aminophenol --> resorcinol)2 \sx 3 : 31-dihydroxy-4 : 41-diaminodiphenyl.  In an example of the dyeing process, well-wetted cotton is introduced into an aqueous solution at 50 DEG  C. containing the first dyestuff of (1) and sodium carbonate, the temperature is raised to 95 DEG  C. with addition of Glauber salt and so maintained for 1 hour, whereupon copper sodium tartrate is added, the temperature is maintained for 1/2 hour at 80-90 DEG  C., and the cotton is rinsed and, if necessary, soaped to obtain a fast blue dyeing.  Specification 455,274 is referred to.
Patent GB-394343-A (GB)
Title: Improvements in or relating to the manufacture of dyestuffs
IPC: C09B43/11
Filed: 1931-09-11
Abstract: Dyestuffs having soap-like properties are made by combining with dyestuffs as such or at any stage in their manufacture high molecular substituted or unsubstituted hydrocarbon radicles of the aliphatic or naphthenyl series containing not less than 10 carbon atoms corresponding to soap forming carboxylic acids, one of the components having a labile halogen atom and the other a hydroxyl or amino group, the combination being effected by means of the hydroxyl or amino group in known manner per se.  The radicles of the naphthenyl series are introduced by means of compounds of the general formula: alicyclic ring-(CH2)x-R where R = OH, NH2 or Cl and x is such that the total number of C atoms is less than 10.  The dyestuffs produce a lather in solution and gelatinize to soap like jellies and are therefore useful for printing pastes.  Textiles may be simultaneously dyed and rendered water resistant with them, and at the same time softness of the fibres is attained.  The following examples are given: (1) p-oxyazobenzene is etherified with alkali and octadecylchloride and the product sulphonated, (2) 2 : 4-dinitrochlorobenzene is condensed with lauric alcoholate and the product reduced to 1-lauroxy-2 : 4-diaminobenzene which may be used for the synthesis of azo and acridine dyes, (3) aminoazobenzene, benzene-azo-a - or b -naphthylamine or aminoazonaphthalenes are heated with cetyl chloride and the products sulphonated.  Dyestuffs of the triphenylmethane, azine, oxazine, thiazine, xanthene, acridine or anthraquinone series containing amino or hydroxy groups, e.g. rosaniline, safranine T or Lauth's violet may be similarly treated or compounds containing a labile halogen atom, e. g. fluorescein chloride can be condensed with higher alkylamines and then sulphonated.  The following samples have been furnished under Sect. 2 (5) of the Acts: (1) triphenylmethane series: dodecyl - pentamethyl - triaminotriphenyl-carbinol-trisulphonic acid (sodium salt) made by condensing p : p<1>-tetramethyldiaminobenzophenone with methyl dodecylaniline and sulphonating, (2) azine dyestuff: aminopheno-naphthazinechlordecylate by condensing decyl-b -naphthylamine with quinone-dichlordiimide in alcoholic solution, (3) acridine dyestuff: dodecyl-benzoflavin by condensing benzoflavin with dodecylchloride in butanol under pressure with addition of magnesium oxide.  Naphthenyl compounds referred to above are made from the naphthenic acids contained in Russian petroleum by high pressure reduction into the corresponding alcohols which are converted into the corresponding chloro or amino compounds.  The Provisional Specification refers also to dyestuffs containing aliphatic or alicyclic radicles containing 8-10 carbon atoms and gives an example in which the dyestuff p-aminophenol --> a -naphthol is converted into the di-octylether with octyl bromide and sulphonated; sulphonic acids of aminophenol and naphthol may also be used as starting components.
Patent GB-1009136-A (GB)
Title: Improvements in or relating to clamping device
Inventor: WARRY REGINALD FRANK
IPC: E04G7/26
Filed: 1963-01-18
Abstract: 1,009,136. Clamps. MARTIN HOIST & ENGINEERING CO. Ltd. Jan. 3, 1964 [Jan. 18 1963], No. 2388/63. Heading E2B. A clamping device comprises a base member 10 in the form of a length of angle iron, a spigot 11 on one limb of the base member providing an attachment position for a swivel or other coupling device, and adjustable hook elements 14, 15 associated one with each limb of said base member and adapted when the base member is applied to a frame member of angle section to be engaged over edge portions of the limbs of said frame member, the arrangement being such that with the base member positioned on the frame member the hook elements may be adjusted to exert a clamping action on said frame member in two directions at right angles to each other thereby securely to hold the base member in place. As shown the hook elements pass through apertures in plates 12, 13 on the limbs of the member 10 and are adjusted by nuts 16, 17.
Patent GB-408419-A (GB)
Title: Improvements in directional lighting fittings
IPC: F21V5/00
Filed: 1933-01-25
Abstract: 408,419. Street &c. lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, BEGGS, S. S., and WILSON, G. H., c/o General Electric Co., Wembley, Middlesex. Jan. 25, 1933, No. 2420. [Classes 75 (ii) and 75 (iv).] The outer surface of a street or like lamp adapted to direct light from a linear source into preferred planes parallel to its axis comprises a fluted surface having an area so large compared with that of the source and having elements which are substantially parallel to said axis and which are separated by distances so small compared with that of the observer, that its effective brightness is substantially less than that of the source. The latter may comprise a straight electric discharge tube. The lamp may comprise a prismatic glass plate 3 and a uniformly fluted glass plate 6, or it may comprise a single non-uniform fluted glass plate the shape of the elements of which is varied to give it directional properties. The flutings may be different on the two sides of the lamp.
Patent GB-193632-A (GB)
Title: Improvements in centrifugal apparatus for breaking up liquids and disseminating them in solids or for mixing and drying liquids and solids
IPC: B04B5/00
Filed: 1922-01-27
Abstract: 193,632. Loring, F. H. Jan. 27, 1922. Universal joints and like couplings.-A pulley 73 is supported by a centrally placed ball-race 74 and drives a part 82 by pins 84 which engage in holes in an elastic ring 85 secured to the part 82. The spindle may be flexibly mounted by means of a bearing sleeve having a conical exterior bedding in a conical elastic socket.
Patent GB-547196-A (GB)
Title: Improvements in valves
IPC: F16K1/34
Filed: 1941-02-24
Abstract: 547,196. Valves. SPECIALTIES DEVELOPMENT CORPORATION. Feb. 24, 1941, No. 2509. Convention date, Jan. 17, 1940. [Class 135] A lift-valve member for controlling high pressure fluids comprises a resilient washer of cork and rubber composition 1 held in a cup-shaped member 17 b) a peripheral flange and by a control member 19 of frusto-conical form converging towards the bottom of the cup. The member 19 has a flange 191 engaging the upper surface of the washer and is mounted on a pin 18 integral with the cup. The end of the pin is riveted over and is formed with a central depression 24 to receive the end 22 of the actuating spindle. In a modification the inner surface of the cup is coned in the opposite direction to the central member.
Patent GB-1489604-A (GB)
Title: Moulding of channel sections
IPC: B28B7/16
Filed: 1974-12-02
Abstract: 1489604 Moulding cementitious channels B J WILCE 2 Dec 1974 [18 Jan 1974] 02537/74 Heading B5A A channel-section having two flanges 5 and a joining web 4, is formed in a mould with the web 4 uppermost. The mould comprises bolted together, plywood side walls 1, spacers 2 and a base 3. Mesh 7 and rods 8/9 are placed in the mould with depending legs of the mesh resting on, or engaging bores in the spacers 2. Cementitious material is sprayed from a cement gun to embed the mesh and rods, with the mesh legs projecting from the flanges 9. In use, channel sections are interconnected to define I- or box-shaped members, and the hollows defined are filled with cement.
Patent GB-1009489-A (GB)
Title: Improvements in or relating to methods of manufacturing luminescent substances
IPC: C09K11/71
Filed: 1964-07-10
Abstract: A luminescent material comprises an alphaphase calcium-barium ortho-phosphate activated by divalent tin, wherein the atomic ratio Ba : (Ca + Ba + Sn) lies between 0.01 and 0.06, preferably 0.03 and 0.05.  The material is prepared by heating above the transition temperature between the beta and alpha phases in an inert atmosphere, the tin preferably being introduced as SnHPO4 or SnNH4PO4 and the calcium as CaHPO4.  The phosphor may be used in combination with a U.V. source as a lamp.
Patent GB-432691-A (GB)
Title: Tool holder for forward and backward planing
IPC: B23D13/00
Filed: 1935-01-28
Abstract: 432,691. Planing - machine toolholders. BRUNNER, G., Ebnat - Kappel, Switzerland. Jan. 28, 1935, No. 2715. [Class 83 (iii)] In a double-cutting planing - tool holder the tool b is mounted in a holder a which rocks about horizontal pivots n to relieve the non- cutting edge of the tool and which is also oscillated about its longitudinal axis by the engagement of projections i with abutments k on the holder frame in order to set the tool at the correct clearance angle for each direction of cutting. The tool post includes a support w having lugs m provided with bearings n in which a member d having a vertical bearing e for the holder a is mounted. The tool is secured by screws o. The tool-holder slides on the inner faces of the frame and is provided with mutually inclined flat surfaces p, p<1> which coact with stop faces q, q<1> within the frame l the face q<1> being located on an adjustable cheek c. The upper side of the frame l is provided with four recessed abutment members k which coact with projections i located on opposite sides of a central plane X X. Springs f engaging a ring v tend to maintain the tool-holder in its central position, Fig. 1. In operation, when the tool encounters the work the holder is swung until one of the projections i, Fig. 7, engages its abutment to cause the holder to rotate about its longitudinal axis to give the required tool clearance. In this position the surface p engages squarely with the stop face q<1> which provides the abutment for the cutting stroke. On the return stroke the holder is swung so that the surfaces p, q are in engagement and the axial rotation to provide clearance is effected by the engagement of the second projection i with its abutment. By rotating the tool holder through 180‹ by means of the wheel g the projections i are placed so that they coact with the second pair of abutments, and the axial rotations at the ends of the stroke are reversed in direction. The machine can thus be changed from left-hand to right-hand feed without resetting the tool. The toolholder may also be used for planing a vertical surface either on the left, Fig. 12, or on the right.
Patent GB-432365-A (GB)
Title: Improvements in or relating to signs and the like
IPC: G09F13/06
Filed: 1934-01-26
Abstract: 432,365. Signs. DELMERICK, B. C., Westwood Hoe, Clammas Way, Cowley, Middlesex, BEESON, H. M., Walton Well, Sykecluan, Iver, Buckinghamshire, and BURNFOOT SIGN CO., Ltd., 4, Vernon Place, Bloomsbury, London. Jan. 26, 1934, No. 2730. [Class 3 (ii)] Letters, figures, designs, or the like comprise superposed V-section laminations moulded from cellulose acetate or the like and one or more V-section strips of a different colour between the laminations. As shown, a letter comprises laminations 4, 5 provided with an insertion strip 6, a transparent sheet 7 protecting the letter from dust. The strip 6 may be formed of celluloid, metal-foil or the like and may comprise strips of different colours bearing wording such that at a distance only the outline of the letter is visible but nearer, the said wording is also visible.
Patent GB-689975-A (GB)
Title: Improvements in or relating to power plants
Inventor: SAMMONS HERBERT
IPC: F02B39/08
Filed: 1950-02-03
Abstract: 689,975. Motor power and jet propulsion plant. NAPIER & SON, Ltd., D. May 3, 1951 [Feb. 3, 1950], No. 2803/50. Drawings to Specification. Class 110(iii) [Also in Group XXVII] The power plant described in Specification 663,296. and now additionally specified as being especially applicable to ships and aircraft and as preferably passing the turbine exhaust to a propulsion nozzle, has the turbine-driven multi-stage axial flow compressor replaced by a similarly driven single-stage centrifugal compressor positioned at the same end of the engine as the enginedriven centrifugal compressor, which is displaced away from the engine to allow such positioning. The engine is now specified as operating with compression ignition. According to the Provisional Specification, the hydraulic clutch interconnecting the two compressors may be mounted between them and may be of the type which allows power flow in one direction only i.e. from the turbinedriven compressor to the engine-driven compressor. Specification 660.411, [Group XXVII], is referred to.
Patent GB-778543-A (GB)
Title: Improvements in or relating to direct current converters
Inventor: LIGHT LEON HENRY
IPC: H02M3/338
Filed: 1956-01-27
Abstract: 778,543. Rectifying. MULLARD RADIO VALVE CO., Ltd. Jan. 27, 1956, No. 2816/56. Class 38 (2). A circuit arrangement comprises a relaxation oscillator employing a P-N-P junction transistor T which has feedback coupling between its collector-emitter circuit and its emitter-base circuit, so that when a D.C. input voltage is applied to the oscillator at input terminals 1, 3 by means of a battery 5 and a switch 17 is momentarily closed the transistor T begins to conduct current which flows through the primary winding 2 of a transformer, the increasing current through this winding 2 producing a negative voltage at the base end of a winding 4 of the transformer thus causing emitter-base current to flow making the voltage drop between collector and emitter very low. Thus substantially the whole of the battery 5 voltage is applied across the winding 2 producing a linear rise of current in the winding and hence a constant voltage across the winding 4. The continuing rise of current in the winding 2 eventually saturates the core of the transformer, the result of which is to cause the voltage induced in the winding 4 to have opposite polarity so that the transistor is abruptly cut-off. During the forward stroke of the oscillation the rise of current in the primary winding 2 induces a voltage in a winding 10 of the transformer which voltage is rectified by a rectifier D1, smoothed by a capacitor C and applied to a load RL. During the recovery stroke after the transistor is cut-off, the collapse of the magnetization of the core induces a voltage in a further winding 15 on the transformer, this voltage being rectified by a further rectifier D2 and applied to the battery 5 in its charging direction.
Patent GB-509161-A (GB)
Title: Improvements in or relating to launching means for aircraft
IPC: B64F1/04
Filed: 1938-01-28
Abstract: 509,161. Launching aircraft. SHEAD, B. B. Jan. 28, 1938, No. 2822. [Class 4] In means for launching aircraft in which a rigid member is pivotally attached at or adjacent 'to one end to an anchoring-device and is provided at or adjacent its other end with disengageable means for supporting an aircraft, the rigid member is constructed as a wing of aerofoil section. As shown, an arm 3 is pivoted about an axis 2 in a mast 1. The arm is of aerofoil cross-section over the greater portion of its length and a portion 3a extending on the opposite side of the mast is of reverse streamline cross-section. Counterweights 6 are provided. The arm carries an engine 7 which drives airscrews 8, 9. The tip of the arm is bent as shown at 3b and constitutes a platform provided with an undercarriage 10, which, may be retractable, and a carriage for detachably receiving an aircraft undercarriage. The engine 7 is controlled from the aircraft, as also is means for releasing the aircraft from the cradle. Disengagement of the aircraft automatically throttles the engine 7. A wind-direction indicator facilitates correct take-off. It is further arranged so that release is possible only when the arm has risen to a certain height. The mast may be pivoted to the ground and braced by cables and the wing and tower may be built in sections. The arm may be driven by the aircraft or from its pivoted end.
Patent GB-1169755-A (GB)
Title: Novel Benzocycloheptathiophene-Ether Derivatives
Inventor: JUCKER ERNST
IPC: C07D333/80
Filed: 1967-01-19
Abstract: 1,169,755. Benzocycloheptathiophene derivatives. SANDOZ Ltd. 19 Jan., 1967 [2 Feb., 1966; 16 Feb., 1966], No. 2840/67. Heading C2C. Novel 9,10 - dihydro - 4H - benzo - [4,5]- cyclohepta - [1,2-b] - thiophene derivatives of the general formula wherein X is a hydrogen or chlorine atom and R is a nortropanyl-(3) radical substituted on the nitrogen atom by a lower alkyl radical containing 1-4 carbon atoms, or an alkylaminoethyl radical in which the alkyl radical contains 1-4 carbon atoms, and acid addition salts thereof, are prepared by reacting a benzocycloheptathiophene derivative of the general formula wherein Y is a hydroxyl radical, a halogen atom or an aryl- or alkyl-sulphonyloxy radical, with a compound of the formula Y-R, wherein Y is an hydroxyl radical when Y in the second formula above is a halogen atom or an aryl- or alkyl-sulphonyloxy radical, or wherein Y is a halogen atom or an aryl- or alkyl-sulphonyloxy radical when Y in the second formula above is an hydroxyl radical ; followed by optional conversion to a corresponding acid addition salt by reaction of the resulting base with an organic or inorganic acid. Pharmaceutical compositions having histamine-, acetylcholine- and serotonin-inhibiting activity comprise, as active ingredient, a benzocycloheptathiophene derivative of the first formula above or an acid addition salt thereof, in addition to a physiologically acceptable, inert carrier, and may be administered enterally or parenterally.
Patent GB-537058-A (GB)
Title: Improvements in or relating to cast cutting tools and high-speed steel tool bits, and processes for making the same
IPC: C22C38/12
Filed: 1940-02-14
Abstract: 537,058. Heat treatment of alloys. BAIRD, C. Feb. 14, 1940, No. 2844. [Classes 72 and 82 (i)] [Also in Group XXII] A turning or other cutting tool is made from high speed steel by melting in an electric-arc furnace, agitating the melt, and pouring into a mould of the approximate tool size. The steel may comprise 15 to 85 per cent. of iron, 0.6 to 2.0 of carbon and the balance selected from tungsten, molybdenum, chromium, vanadium, and cobalt. It may also contain small quantities of nickel and tantalum. The preferred type of steel is one containing 18 per cent. of tungsten, 4 of chromium, and 1 of vanadium, e.g. 19-46 of tungsten, 3.86 of chromium, 1.19 of vanadium, 1.12 of molybdenum, 10.08 cobalt, 0.80 carbon and the balance iron. The alloy is melted in an indirect arc electric furnace of the rocking type and cast at 2845‹-2950 ‹F. into cold graphite moulds. The castings, when cold, are ground to shape and sharpened. The casting may then, if desired, be heated once or twice to below the critical temperature, e.g. 1000‹-1150‹F. the first cooling being in circulating air and the second, if used, in air or in oil. Tools having the following percentage compositions are referred to, viz:
Patent GB-432496-A (GB)
Title: An improved centrifugal pump
IPC: F04D29/22
Filed: 1934-01-27
Abstract: 432,496. Centrifugal pumps. HALLEWELL, H. S., 87A, Braemar Avenue, Neasden, London. Jan. 27,1934, No. 2848. [Class 110 (i)] A centrifugal pump comprises a hollow shaft 2 which forms the suction, a double disc impeller 1, 15, and a stationary casing 5, 6. Liquid is drawn in through a valve 9, and passes to the impeller via the shaft 4 and oblique passages 3. After leaving the impeller the liquid passes along guide vanes held between a fixed disc 16 and the casing 6 and thence to the axial discharge 13. The space 17 between the discs 15, 16 forms a priming chamber.